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Updated: Jun 28, 2025

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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Optical phase encoding in a pulsed approach to reservoir computing.

Johan Henaff, Matthieu Ansquer, Miguel C Soriano

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    Summary
    This summary is machine-generated.

    We encoded data on the optical phase of laser pulses for photonic reservoir computing. Homodyne detection read amplitude and phase, showing promise for quantum-enhanced information processing.

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    Area of Science:

    • Optics and Photonics
    • Quantum Information Science
    • Computational Science

    Background:

    • Multimode light fields offer advanced capabilities in information science.
    • Reservoir computing leverages complex systems for computation.
    • Optical phase encoding is a key technique in photonic systems.

    Purpose of the Study:

    • To implement a reservoir computing protocol using data encoded on the optical phase of femtosecond laser pulses.
    • To utilize homodyne detection for reading data from optical fields, accessing both amplitude and phase information.
    • To demonstrate the protocol's effectiveness on nonlinear autoregressive moving average (NARMA) tasks and laser dynamic predictions.

    Main Methods:

    • Data encoding onto the optical phase of femtosecond laser pulses.
    • Photonic implementation of a reservoir computing architecture.
    • Homodyne detection for retrieving amplitude and phase information from optical fields.
    • Numerical simulations and experimental validation.

    Main Results:

    • Successful implementation of reservoir computing using optical phase data.
    • Demonstrated performance on NARMA tasks and laser dynamic prediction.
    • Validation of homodyne detection for data retrieval in this context.

    Conclusions:

    • Photonic reservoir computing utilizing optical phase is feasible and effective.
    • Homodyne detection provides a powerful method for reading complex optical field data.
    • The approach shows potential for future quantum-enhanced information processing protocols.